Harry W Palm

University of Rostock · Department Maritime Systeme

The effect of live feed diets containing Brachionus plicatilis (B) and Apocyclops panamensis (A) was investigated on pikeperch larval survival, growth, and fatty acid composition in two experiments (E1 and E2). Up to six different diets were provided to the larvae, in which the letters of the diet names represent the live feed organisms as mentione...

We assessed the influence of different Clarias gariepinus stocking densities in Recirculation Aquaculture Systems (RAS) on the water microbiome composition. Pathogenic bacteria inside the rearing environment were also investigated to provide information regarding the risk of infection associated with common fish farming practices. Molecular approac...

Taxonomic issues within Trypanorhyncha, e.g., the inaccurate light microscopic visualisation of the hook patterns, are solvable by confocal laser scanning microscopy (CLSM). We applied CLSM imaging to study Trygonicola macropora (Shipley et Hornell, 1906) and Dollfusiella michiae (Southwell, 1929) from Neotrygon caeruliopunctata Last, White et Sére...

In the present study, wheatgrass (Triticum aestivum L.) was chosen since fish effluents could be adequate to support its optimal growth. Wheatgrass was irrigated by water from African catfish (Clarias gariepinus) production under two stocking densities, namely extensive aquaculture unit (EAU) and intensive aquaculture unit (IAU), and tap water mixe...

With a long coastline stretching from tropical to subtropical climate zones, and an immense exclusive economic zone with over 4000 islands, the Vietnamese marine waters support a rich and biodiverse parasite fauna. Although the first parasitological record was in 1898, systematic studies of the parasite fauna have increased during the last 50 years...

Echinocephalus caniculusn. sp. (Nematoda, Gnathostomatidae Railliet, 1895) was isolated from the spiral valve of the lesser spotted dogfish Scyliorhinus canicula (L.) from the waters off Kalaat El Andalous, North East Tunisia. This new species is mainly characterized by a cephalic bulb armed with 31–39 transverse rows of uncinated hooks, a comparat...

A new cultivation system with the chlorophyte Monoraphidium contortum combined with a self-sustaining culture of the freshwater rotifer Brachionus calyciflorus was applied for Sander lucioperca (L.) larviculture. Survival, morphometrics, as well as fatty acid composition of pikeperch larvae were analyzed after a ten-day feeding period. By using the...

This book presents a history of marine fish parasitological research in Indonesia, including a checklist of fish parasites in Indonesian mariculture facilities. This checklist’s records include 104 parasite taxa (24 taxa could not be identified to species or lower taxon level, e.g. Trematoda indet.), belonging to ten parasite phyla (Euglenozoa, Myz...

Despite being an important component of the marine ecosystem and posing health risks to human seafood consumers, fish parasites in Indonesia have yet to be adequately described. Here, we analyzed the diet and metazoan parasite fauna of seven commercial fish species ( Alectis indica , Carangoides chrysophrys , Johnius borneensis , Mene maculata , Tr...

Despite being an important component of the marine ecosystem and posing health risks to human seafood consumers, fish parasites in Indonesia have yet to be adequately described. Here, we analyzed the diet and metazoan parasite fauna of seven commercial fish species (Alectis indica, Carangoides chrysophrys, Johnius borneensis, Mene maculata, Trichiu...

The rapid development of Indonesia over the past 20 years and also its increasing negative impact on the environment are by far best to be seen at the metropolitan area and the corresponding coastal ecosystems of Jakarta. All the information and facts reported in this chapter regarding the environmental state of Jakarta Bay demonstrate impressively...

Mint (Mentha spicata) was cultivated in different hydroponic components: grow pipes, a raft and an ebb-and-flood gravel substrate system irrigated with aquaculture effluents from intensive African catfish (Clarias gariepinus) production under decoupled aquaponic conditions in northern Germany. The spearmint grew well and plant heights above ground...

The aim of the present study was to identify the parasite fauna of cultured rainbow trout (Oncorhynchus mykiss Walbaum, 1792) and Arctic charr (Salvelinus alpinus (L.)) from a flow-through aquaculture system at Lake Tollense in northern Germany. The fish were sampled during different seasons in 2018 from an open freshwater raceway. For rainbow trou...

A farmland based African Catfish recirculation aquaculture system with a production volume (PV) of 300 m3 was modelled under realistic market conditions in order to analyse the impact of price fluctuations on profitability. As a monoculture recirculating aquaculture system (RAS) for whole fish and the wholesaler’s market, the model northern German...

Aspidogaster limacoides Diesing, 1834 (Aspidogastridae) is redescribed based on light and scanning electron microscopy of specimens from the stomach and intestine of Abramis brama, Rutilus rutilus and Scardinius erythrophthalmus (Actinopterygii: Cyprinidae). The fishes were sampled during 2018 and 2019 at Lake Tollense in Mecklenburg-Western Pomera...

In diesem Handbuch werden insgesamt 183 Parasitenarten von 36 Fischarten aus dem Süßwasser der Bundesländer Mecklenburg-Vorpommern (MV) und Nordrhein-Westfalen (NRW) beschrieben. Dabei kommen 33 einzellige und 150 mehrzellige Parasitenarten sowohl ekto- als auch endoparasitisch vor. Das Handbuch zielt auf die praktische Anwendung in der heimischen...

Purpose The present study investigates the fish parasite fauna from Lake Tollense, Mecklenburg-Western Pomerania, Germany. Methods A total of 117 perch ( Perca fluviatilis ), bream ( Abramis brama ) and roach ( Rutilus rutilus ) were sampled for parasites during 2018 and 2019 from Lake Tollense and compared with earlier data from Lake Malchin and...

The aim of the presented poster is to determine the parasite fauna and detect the presence of opportunistic bacteria of cultured rainbow trout (Oncorhynchus mykiss Walbaum, 1792) seasonally.

In the evaluation of the larval trypanorhynch fauna off the Sultanate of Oman, a total of 188 bony fishes belonging to 16 species were studied, which led to the description of a new species with the establishment of new host and locality records. A new otobothriid species, Otobothrium muscatense n. sp., is described from Rhabdosargus sarba (Forsskå...

Basil (Ocimum basilicum) was cultivated in Rostock, Northern Germany, in a decoupled aquaponic system with African catfish (Clarias gariepinus) under intensive rearing conditions by using three hydroponic components, the dynamic root floating technique (DRF), the raft technique, and grow pipes. A 25% of the recommended feed input still allowed Afri...

Purpose Fish parasites can cause diseases in humans and lead to commercial losses in fisheries and aquaculture. The objectives of this study were to analyze E. ongus’s parasite fauna regarding food safety and parasite transmission risk between Epinephelus species and test whether E.ongus populations can be distinguished by their parasite community....

A new ancyrocephalid monogenean is described from the gills of wild White-spottedrabbitfish Siganus canaliculatus (Park) based on morphological and molecular analyses. Glyphidohaptor safiensis n. sp. can be distinguished from other members of the genus by the shape of the accessory piece of the male copulatory organ (MCO). Unlike its congeners, the...

Basil (Ocimum basilicum) was cultivated in northern Germany in three different hydroponic components: grow pipes, a raft, and an ebb-and-flood gravel substrate. The nutrients originated from the intensive production of African catfish (Clarias gariepinus) with 140 fish/m 3 under decoupled aquaponic conditions. After 41 days, plants were significant...

"Recirculating aquaculture systems (RAS) allow controlled cultivation of bivalves. RAS offer adjustable environmental conditions such as water temperature, salinity and stable water quality. In such systems, microalgae for mussel feeding are unfortunately filtered out by the common RAS techniques in use (regular biofilter, protein skimmer). We desi...

Two new tentaculariid species were found infecting carcharhiniform sharks from off the coasts of Malaysian Borneo and the southwestern coast of the Baja California Sur, Mexico. Both new species exhibit a homeoacanthous heteromorphous basal and a homeoacanthous homeomorphous metabasal armature. Since this hook arrangement is unique within the tentac...

This study presents new information on tentaculariid trypanorhynchs from the Indo-Pacific region around Bali, Indonesia. Two new tentaculariid species, Nybelinia balinensis n. sp. and N. mobulicola n. sp., are described from the stomach of their myliobatid host Mobula japanica (Müller & Henle). Nybelinia balinensis n. sp. is a large-sized tentacula...

A new species, Alexandercestus masoumehae n. sp., is described from the sicklefin lemon shark, Negaprion acutidens (Rüppell), from the Iranian coast of the Gulf of Oman. The new species is the third in this genus, all parasitizing species of Negaprion Whitley. Based on morphological characters and scanning electron microscopy the new species is dif...

Stock enhancement and sea-ranching of groupers are a potential solution to overfishing of wild grouper catches. Hence, it is vital to understand the costs and benefits of stock enhancement and sea-ranching. A simulation was conducted to estimate the cost and benefits of using brown marbled grouper Epinephelus fuscoguttatus (Forsskål, 1775) for stoc...

Plerocerci of the monotypic Paranybelinia otobothrioides were found parasitizing the subtropical neritic krill Nyctiphanes simplex in the Gulf of California, Mexico. The plerocerci were recovered from two microhabitats of the intermediate host, typically embedded inside the digestive gland (hepatopancreas) or rarely in the hemocoel. The morphology...

Coupled aquaponics is the archetype form of aquaponics. The technical complexity increases with the scale of production and required water treatment, e.g. filtration, UV light for microbial control, automatic controlled feeding, computerization and biosecurity. Upscaling is realized through multiunit systems that allow staggered fish production, pa...

Five new species of Acanthobothrium Blanchard, 1848 are described from Gymnura cf. poecilura from the Gulf of Oman and Persian Gulf. They all belong to the Category 1 and can be differentiated from all congeners by a combination of characters, including marginal lappets on the bothridial rim, the lack of spinitrich microtriches on the proximal both...

Ortho-phosphate inside recirculation aquaculture systems is limited as a consequence of precipitation and regular water exchange rates. To improve plant growth in coupled aquaponics, phosphate fertilizer addition to hydroponics can increase PO 4 3−-P concentrations inside the process water. We investigated the effects of four PO 4 3−-P concentratio...

The new species Bucephalus damriyasai n. sp. is described from Caranx heberi (Bennett) from off Bali, Indonesia. It can be distinguished from other Bucephalus spp. recorded from carangid hosts by its narrow elongate body shape and the relatively long distance between the rhynchus and the vitellarium, as well as other features distinguishing it from...

Two identical coupled ebb-and-flow gravel substrate aquaponics units (each 3.81 m3 – domestic backyard) were tested for extensive fish and herb productivity under autumn conditions in northern Germany (Mecklenburg-Western Pomerania). Common carp (Cyprinus carpio) were stocked in unit I with 10,033.3±305.5 g (number 226, initial weight 35.0±18.1 g)...

Overfishing is a major threat to the survival of shark species, primarily driven by international trade in high-value fins, as well as meat, liver oil, skin and cartilage. The Convention on the International Trade in Endangered Species of Wild Fauna and Flora (CITES) aims to ensure that commercial trade does not threaten wild species, and several s...

Data of landed sharks at Tanjung Luar auction that had been used for this study. (XLSX)

Questionnaires have been used to interview shark fishers, collector, traders, and processors. (DOCX)

We investigated the effects of plant density on the welfare of African catfish, Clarias gariepinus, in coupled aquaponics over 85 days. The moderate density (mpd) of basil, Ocimum basilicum, was compared with the high density (hpd) and control (n = 0). The behavior was analyzed by visual and video observations, and after the application of induced...

Die Ergebnisse zeigten abermals einen positiven Einfluss der Aquaponik auf das Fischwohl. Mit steigender Pflanzdichte wurden die Auswirkungen auf einige Fischwohl Parameter sogar verstärkt. So konnten beim Afrikanischen Raubwels u.a. eine geringere Anzahl von Haut-und Flossen-Verletzungen und insgesamt ein ruhigeres Verhalten in aquaponischen Syste...

A new endoparasitic monogenean of Paradiplectanotrema Gerasev, Gayevskaya & Kovaleva, 1987, Paradiplectanotrema klimpeli sp. nov., is described from the southern Balinese coast, Indonesia. The new species is much larger, wider and characterized by the longest dorsal anchors compared with the congeners. Ventral anchors and ventral bars are the small...

The purpose of this study was to examine the chemical, physical, and sensory characteristics of fillets from four different catfish species on the German market to compare the nutritional properties and enjoyment values for the consumer. Furthermore, a systematic comparison of regionally produced versus imported catfish is still missing in this cas...

A total of 35 common garfish, Belone belone (Linnaeus, 1761), were studied for metazoan parasites on their spawning grounds in the western Baltic Sea. Nine parasite species were found, and six new locality records could be established for German coastal waters (Axine belones, Monogenea; Proteocephalus sp., Cestoda; Anisakis simplex (s.s.), Contraca...

An endoparasitic monogenean was identified for the first time from Indonesia. The oesopha-gus and anterior stomach of the croakers Nibea soldado (Lacé pède) and Otolithes ruber (Bloch & Schneider) (n = 35 each) sampled from the South Java coast in May 2011 and Joh-nius amblycephalus (Bleeker) (n = 2) (all Sciaenidae) from Kedonganan fish market, So...

Calculation of best fitting model for phylogeny studies. https://figshare.com/s/75cc37ed9297dc11d983. (XLS)

Comparative linear measures for Pseudempleurosoma haywardi sp. nov. from the type host Nibea soldado (Sciaenidae). All measurements in μm, https://figshare.com/s/75cc37ed9297dc11d983. (XLSX)

Comparative linear measures for Pseudempleurosoma haywardi sp. nov. from the additional host Otolithes ruber (Sciaenidae). All measurements in μm, https://figshare.com/s/75cc37ed9297dc11d983. (XLSX)

Confocal photos of the haptor of Pseudempleurosoma haywardi sp. nov. Confocal microscopy illustrations of the opisthaptor with hooks, anchors and bars (dorsal bar concave anterior) (A), with focus on the inner two (of seven) pairs of hooks, partially overlaid by the ventral anchor with both its bars (B) and the same in detail (C), https://figshare....

Alignment of sequences. https://figshare.com/s/75cc37ed9297dc11d983. (TIF)

Permission to use Fig 4. https://figshare.com/s/75cc37ed9297dc11d983. (TIF)

The examination of the two batoid species, Pastinachus sephen (Forsskål) and Himantura gerrardi (Gray), resulted in a morphologic identification of the five eutetrarhynchid species, namely Parachristianella indonesiensis Palm, 2004 reported for the first time from Himantura gerrardi, Pa. monomegacantha Kruse, 1959, Prochristianella clarkeae Beverid...

Fischerei & Fischmarkt in M-V • 2 /2017 45 Aus der Forschung Fortsetzung des iMTA-Artikels aus Fischerei und Fischmarkt in M-V 01/2017 3 Projektergebnisse UP 3.3. Stoffmengenbilanz und Modellierung Die betrachtete offene Netzkäfiganlage mit Regenbo-genforellen (Oncorhynchus mykiss) vor Nienhagen (westliche Ostsee) wurde im Projekt Baltic IMTA zu ei...

Introduction Harvest quality rainbow trout (Oncorhynchus mykiss Walbaum, 1792) from a net cage system off the German Baltic Sea coast were studied for ecto- and endoparasites. A total of 105 specimens were sampled between November 2013 and 2014. Four endoparasite taxa were found and no trichodinid, monogenean or crustacean ectoparasites could be de...

Die Möglichkeiten, die sich mit der Nutzung von inte- grierten Aquakultursystemen ergeben, sind in Deutsch- land bisher nicht ausgeschöpft. Strenge Reglementie- rungen und Umweltauflagen, begrenzter Zugang zu Wasser(-flächen), hohe Investitionskosten, abträgliche klimatische Bedingungen sowie eine kritische Haltung der Öffentlichkeit gegenüber d...

In this study we analysed fecal bacterial communities and parasites of three important Indonesian fish species, Epinephelus fuscoguttatus, Epinephelus sexfasciatus and Atule mate. We then compared the biodiversity of bacterial communities and parasites of these three fish species collected in highly polluted Jakarta Bay with those collected in less...

Number of raw sequence reads, merged paired reads, post-QA/QC sequence reads, and number of taxonomically classified reads. The light grey and dark grey dashed lines represent the average number of raw sequence reads and taxonomically classified sequence reads across all samples. (TIFF)

Rarefaction curves. (TIFF)

The objective of this study was to assess the environmental conditions of a heavily polluted marine habitat using descriptors of fish parasites. Epinephelus coioides from Jakarta Bay as well as off Jakarta Bay was studied for metazoan parasites. Based on 70 fish and considering previous studies (230 fish), an environmental indicator system was desi...

SUMMARY This study provides the first comprehensive information on the parasite fauna of the white-streaked grouper Epinephelus ongus . A total of 35 specimens from the archipelago Karimunjawa, Java Sea, Indonesia were studied for metazoan parasites. For comparison, the documented parasite community of 521 E. areolatus , E. coioides and E. fuscogut...

A new species of the genus Dollfusiella Campbell & Beveridge, 1994 is described from Pastinachus sephen (Forsskål) in the Persian Gulf. Dollfusiella qeshmiensis n. sp. is allocated to the genus Dollfusiella based on the possession of two bothria, prebulbar organs, a heteroacanthous typical armature with tightly spaced rows of hollow hooks, a basal...

The objective of this study was to assess the environmental conditions of a heavily polluted marine habitat using descriptors of fish parasites. Epinephelus coioides from Jakarta Bay as well as off Jakarta Bay was studied for metazoan parasites. Based on 70 fish and considering previous studies (230 fish), an environmental indicator system was desi...

Four new species of Acanthobothrium van Beneden, 1850 are described from guitarfish, Rhynchobatus cf. djiddensis (Forsskål), collected from the Gulf of Oman and Persian Gulf. Acanthobothrium janineae sp. n., a category 1 species, differs from all congeners in category 1 by having a long vagina extending into the vas deferens and different, proglott...

Zoographical distribution of metazoan fish parasites in herring, Clupea harengus, from the Baltic Sea was analysed in order to use them as potential biological indicators. A total of 210 herring from six different sampling sites were investigated, harbouring 12 different parasite species [five digeneans (D), one cestode (C), three nematodes (N) and...

Two new species of Acanthobothrium van Beneden, 1850 from the spiral intestine of Pastinachus cf. sephen Forsskål from the Iranian coast of the Persian Gulf and the Gulf of Oman are described. To analyse the surface ultrastructure the worms were studied using light and scanning electron microscopy. Acanthobothrium jalalii sp. n. belongs to the cate...

A total of 195 Epinephelus coioides (Hamilton, 1822) were studied for fish parasites from Javanese (Segara Anakan lagoon) and Balinese waters. Up to 25 different parasite species belonging to the following taxa: one Ciliata, one Microsporea, five Digenea, one Monogenea, four Cestoda, four Nematoda, one Acanthocephala, one Hirudinea and seven Crusta...

Here, we present the ITS ribosomal DNA (rDNA) sequence data on 330 larvae of nematodes of the genus Anisakis Dujardin, 1845 collected from 26 different bony fish species from 21 sampling locations and different climatic zones. New host records are provided for Anisakis simplex (Rudolphi, 1809) sensu stricto (s.s.) and A. pegreffii Campana-Rouget et...

Non-indigenous species that become invasive are one of the main drivers of biodiversity loss worldwide. In various freshwater systems in Europe, populations of native amphipods and fish are progressively displaced by highly adaptive non-indigenous species that can perform explosive range extensions. A total of 40 Ponto-Caspian round gobies Neogobiu...